Question

我有以下内容：

class Employee {
 [Key]
 public int EmployeeID {get;set;}
 public List<TimeSensitiveData> JobTitle {get;set;}
 public List<TimeSensitiveData> Department {get;set;}
 public List<TimeSensitiveData> OfficeLocation {get;set;}
}

abstract class TimeSensitiveData {
 [Key]
 public int TimeSensitiveDataID {get;set;}
 public string Value1 {get;set;}
 public DateTime Date {get;set;}
}

class JobTitle : TimeSensitiveData {}
class Department : TimeSensitiveData {}
class OfficeLocation : TimeSensitiveData {}

种子方法看起来像这样：

seed () {
 List<TimeSeriesData> oflc = new List<TimeSeriesData>();
            TimeSeriesData oflc2 = new OfficeLocation();
            oflc2.Value1 = "New York";
            oflc.Add(oflc2); 
 List<TimeSeriesData> dpt = new List<TimeSeriesData>();
            TimeSeriesData dpt2 = new Department();
            dpt2.Value1 = "New York";
            dpt.Add(dpt2); 
  List<TimeSeriesData> jt = new List<TimeSeriesData>();
            TimeSeriesData jt2 = new JobTitle();
            jt2.Value1 = "New York";
            jt.Add(jt2);

 var Employees = new List<Employee> {
  new Employee{JobTitle=jt,Department=dpt,OfficeLocation=oflc},

 } 

}

当我为员工播种数据库时，它会创建一个employees表和一个TimeSensitiveData表。在TimeSensitiveData表中有一个Discriminator列（我知道它在做什么），但也有多个Employee_EmployeeID列。实际上，它似乎为每个扩展TimeSensitiveData的复杂对象创建了一个。

所以TimeSensitiveData表看起来有点像这样

TimeSensitiveDataID  Value1  Date  Discriminator  Employee_EmployeeID Employee_EmployeeID1 Employee_EmployeeID2
1                    xx      date  JobTitle       NULL                NULL(or value)       NULL
2
etc..
etc..

我不确定为什么会这样，有什么想法吗？

我应该在员工模型中列出不是TimeSensitiveData类型列表的列表吗？它们应该是具体的类型列表吗？

Answer 1

[InverseProperty]部分修复了

实体框架TPH创建多个ID列

1 个答案: